Home / 18,684.39-27,987.05-15,111.17

Finding the Fourth Proportional to 18,684.39, 27,987.05 and 15,111.17

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Solution

The fourth proportional to 18,684.39, 27,987.05 and 15,111.17 is: 22,634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.39 : 27,987.05 = 15,111.17 : x
  2. Step 2: Convert to fraction form
    18,684.39/27,987.05 = 15,111.17/x
  3. Step 3: Cross multiply
    18,684.39x = 27,987.05 × 15,111.17
  4. Step 4: Simplify right side
    18,684.39x = 422,917,230.57
  5. Step 5: Solve for x
    x = 422,917,230.57/18,684.39
  6. Step 6: Final answer
    x = 22,634.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.